#   Key-Operated Marine Battery Isolator Switch - 500A Momentary at 12V   RWB543

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    $17.86  each

            Brand: [AAA Marine Inspection Ports & Boat Accessories](https://www.rhsboating.com.au/brands-listing/category/aaa-marine-inspection-ports-boat-accessories.html)

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    ### Key-Operated Marine Battery Isolator Switch - 500A Momentary at 12V

RWB543 provides key-operated battery isolation for 12V or 24V systems. Its stated 500A momentary rating applies at 12V, and the key can be removed after switching.

Turn and remove the key to isolate the electrical system. Includes rubber sealing caps on switch and key.

### Choosing and using this product

A dedicated isolator provides a clear switching point for the battery circuit included in its installation. Consider it when replacing an existing switch or arranging an accessible isolation control during an electrical refit. The correct choice depends on both the physical installation and the electrical duty of the circuit being switched.

Check the system voltage and compare the relevant current ratings with the expected load. Pay attention to the difference between continuous operation and short-duration demand when assessing suitability. Measure the available mounting space and allow room for the body, cable connections and operation of the control. Select cable sizes and terminations as part of the complete circuit design, with appropriate protection elsewhere in the system.

Plan the switch position so it can be reached without moving stored gear or straining around the battery. Label what it controls and keep that information with the wiring diagram. Identify equipment that needs an ongoing supply before deciding which circuits will be isolated, so the final arrangement matches the boat's operating requirements.

Follow the engine, charging-system and battery manufacturer's guidance when operating the switch, particularly if charging equipment is running. Isolate supplies using the appropriate procedure before installation or servicing, and support heavy cables independently of the switch terminals. During maintenance, inspect the mounting, cable ends and connections for looseness or damage. Check that the operating control remains accessible after other equipment is added nearby. A clearly documented arrangement helps another operator understand the shutdown procedure and makes it easier to trace the switched circuit during later service work or fault-finding aboard.

Include the removable key in the shutdown routine and keep its storage location clear to authorised operators.

### Product details

- Voltage: 12V or 24V
- Momentary rating at 12V: 500A